Wrench



Jan. 2, 1923 1 H. A. ALLEN. 440,950.

WRENCH.

FILED OCT' 2 SHEETS-SHEET L 4 8 llllllllllllli WITNESS: INVENTOR.

Jim

Jan. 2, 1923. 1,440,950.

- H. A. ALLEN.

WRENCH.

FILED OCT. 20, m9. 2 SHEETS-SHEET 2.

" INVENTOR.

flat or jaw-equipped members and an ad:

HERBERT A. ALLEN, 9F JEFFERSON ISLAND, lvIUNTANA.

' WRENCH.

App1ication filed October 20, 1919. $er1'al no, 331,916.

T 0 all whom it may concern:

Be it known that I Hnnnnnr A. A LEN, a

citizen of the United States, residing at Jefferson Island, in the county of Gallatin and State of Montana, have invented certain new and useful Improvements in l Vrenches, of which the following is a specification.

This invention relates to adjustable wrenches and my object is to produce a device of this character provided with jaws at each end and comprising essentially two members slidable transversely of their length and adapted in such adjustment to impart closing movement to the jaws at one. end and opening movement to the jaws at the other end, and the object is to prodiue a wrench of the type outlined which is efficient, strong and inexpensive to manufacture.

With this general object in view the invention consists in certain novel and useful features of construction and organization of parts as hereinafter described and claimed; and in order that it may be fully understood, reference is to be had to the accompanying drawings, in which:

Figure 1', is a side elevation of a wrench embodying the invention.

Figure 2, is a view of the same showing the ends of the wrench in elevation and the intermediate portion in longitudinal section.

Figure 3, is an inner face view of one of the jaw members of the wrench and also discloses the wrench adjusting device.

Figure 4:, is an edge view of the same.

Figure 5, is an inner face view of the other jaw member of the wrench. Figure 6, is an edge view of the member of the wrench shown by Figure 5.

Figure 7, is an end view of the wrench. Figure 8, is a fragmental perspective view of one member of the wrench.

Referring to the drawings in detail, it will be noted that the wrench comprises two justing rod fitting slidingly between said members and adapted to effect lateral adjustment thereof, it being also noted that each of the jaw-equipped members has the jaws at opposite ends and facing in opposite directions so that adjustment which effects approaching movement of the jaws at one end of the wrench at the same time effects receding or opening movement at the opposit-e end of the wrench.

' member 1,

tive members but of less Referring now tothe drawings in detail, 1 and 2 indicate two bar members which are smooth at their inner sides and are respectively provided midway their length with slots 3 and 4-. The slot 3,.of member 1 extends obliquely with respect tothe longitudinal axis of said member, whereas the slot l of member 2 extends longitudinallv. hence said slots always intersect at sonie point in their length. Parallel with and at equal distances from and at opposite ends of slot 3, member 1 is provided in its inner faces with a pair of grooves 5- Member 2 on the contrary 1s provided with alongitudinal groove 6 in its inner face into which the slot 4 opens, and said groove is preferably enlarged and deepened at its ends to produce grooves 7 matching grooves 5 of member 1. It will thus be seen that grooves 5 and 7, like slots 3 and 4, always intersectat some point in their length.

The member 2 is widened at each end and across said ends beyond the grooves 7, is provided with parallel guide ribs 8. The member 1 is also widened at its ends and is provided in its inner side at each end with parallel grooves 9 receiving the ribs 8 of this arrangement guarding against twisting and binding of the members when adjusted. Each member outward of its respective ribs 8 and grooves 9 terminates in a head, and each head is formed with an angular recess indicated by the edges 10 extending parallel with the ribs and grooves, 11 extending at right angles to edges 10, and 12 extending obliquely and connecting the inner ends of the edges 10 and 11, the last-named edges constituting the engaging faces of the main aws of the member and it will be noted, facing in opposite directions. The jaws 13 of which edges 11 form the engaging faces, are of substantially twice the thickness of a member, that is to say each jaw 13 is of suchthickness that it projects beyond the inner face of its respec tive member to the plane of the outer face of the abutting member, and between each jaw 13 and the adjacent rib 8 or groove 9, as the case may be,jaws 14 are formed, these jaws being of greater thickness than their respecthickness than the jaws 13 of such members. The jaws 14s are disposed between the jaws 13 and the adjacent ribs or grooves 8 or 9 as the case may be, and the inneror abrupt faces of jaws 14 intersect the oblique edges 12 of the recessed ends of the jaws and parallel the engaging i'aces 0r edges 11 ot' jaws l3. l t hen the members are assembled and 13 at corresponding ends of the wrench are fully closed, they are directly opposed but spaced apart, and the adjacent smaller jaws 1a are likewise directly opposed but are in abutting relation, it being noted by reference to Figure 1, that when the small jaws at one end abut together, the adjacentmain jaws are closed to their fullest extent, and that at the opposite end of the wrench the two sets of jaws are opened to their widest extent. To give the greatest range ot'yuse the members are so proportioned that the main jaws at one end are susceptible of being brought closer together than the main jaws at the opposite end, and likewise the small. jaws at one end may be so positioned relative to their adjacent main jaws'as to permit of engageresponding jaws at the opposite end.

A jaw-adjusting member is in the form of a bar 15 fitting in groove 6 for endwise adjustment' therein, and saidbar member is equipped with a cross rivet 16 extending through the slots 3 and 4- of the members and upset or headed at its ends to hold the two members together, that is with their smooth or inner faces engaging and with the ribs 8 of one member engaging the grooves 9 of the other. The bar 15 is also provided with lateral projections or studs 17 respectively engaging the adjacent grooves 5 and 6 of the members 1 and 2. When the jaws at the left hand end of the wrench as disclosed by Figure 1, are closed to their fullest extent, and the jaws at the other end are opened to their greatest extent. the rivet 16 is at theright hand end of the slots 3 and at and the studs 17 are engaging the right hand ends of their respective slots 5 and 7. To effect adjustment tending to open the jaws at the left hand end and close the jaws at the'right hand end of the wrench, the rivet is slid to the left, and this imparts reverse movements to members 1 and 2, tending to bring theouter ends of the slot 3 and grooves 5 into register with the corresponding ends of slot 4 and grooves 7. This action, because each bar member has its jaws at opposite ends Facing in opposite directions, results in closing movements oi the jaws at one end and. opening movements of? the jaws atthe other. Reverse movement of the rivet effects reverse movement of the rods and the studs 17 and hence reverse movement of the jaws to that above-tracesl.

To cooperate with the heads of the rivet '16 in holding the bar members flatly together. the heads of eacho'fisaid bar members along the recessed edges 10, are pro-- 'vided with finsor flanges I8 adapted to be bentdown overthe abutting edges 10 of the other member. It isobvious of course that parent that l have produced a simple, strong, a

durable and eilicient wrench which embodies the features of advantage 'set forth as desir* able in the statement of the object of the invention, and which can be modified in various particulars without departing from the principle of construction involved or p v :l'roin the spirit and scope ot the appended ment with nuts of larger size than the corclaims.

l clann: l. A wrench comprising two members lit- ,ting flatly together and formed at one end with opposing jaws, one of said members having ribs extending obliquely across from one edge to the other, to the other member having corresponding grooves receiving said ribs; said members also having a plurality oi? intersecting slots, and flanges extending parallel to the said grooves and ribs, the flanges of one member overlapping the adjacent niember,-and a bar slidable longitudinall 0t and between said members and provided with pins engaging intersecting slots thcreot.

2. A wrench comprising two members titting flatly together and terminating in aws facing in opposite directions, the adjacent jaws ot the members standing in opposed relation, the inner side of one of said members having a longitudinal groove and slots at the end and middle of said groove, and a the other member having parallel oblique slots registering with and intersecting the first-named slots, abarfitting slidingly in said groove and provided with cross pins engaging the int rsecting slots respectively, one of said cross pins having exterior grips for adjustment of the bar, and flanges pro ject-ing from the membe s where each abuts jaw of the other overlapping the joints between said lllGEl'lbGl'S at such abutting points for holding the latter flatly together at their ends.

3. :l wrench including couuianiou jaw members providing a pairot' (reacting jaws at opposite ends thereoii, and an adjusting ele ment slidabl v connecting the member and slidable longitudinally thereof" for shifting i 

